monroe



(No Model.) t

G. W. MONROE.

LATOH.

N0.466,008. Patented Dec. 29, 1891.

us ca, Puma-Luna, wasnmcmu n c UNITED STATES PATENT OFFICE.

CHARLES MONROE, OF CLEVELAND, OHIO, ASSIGNOR TO \VILLIAM It,

' MONROE, OF SAME PLACE.

LATCH.

SPECIFICATION forming part of Letters Patent No. 466,008, dated December29, 1891.

Application filed September 21, 1891. Serial No. 406,322. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES W. MONROE, a citizen of the United States,and a resident of Cleveland, county of Ouyahoga, State of Ohio, haveinvented certain new and useful Improvements in Automatic Latch-Locks,of which I hereby declare the following to be a full, clear, and exactdescription, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to improvements in automatic latches, andis-especially designed as an improvement upon Letters Patent granted toWilliam R. Monroe, dated July 8, 1890, No. 431,752, in which a pivotedlatch-bolt is used in connection with an actuating-spring andoppositely-beveled edges.

The present invention is designed to be operated upon without thespring, and is also accompanied by a locking device, which may be of thesimplest possible character.

My invention consists in a vertically-moving latch with means foroperating and securing the same in' the keeper, as hereinafterdescribed, shown in the accompanying drawings, and more specificallypointed outin the claims.

In the accompanying drawings, Figure 1 is an elevation of front oflatch-lock with the upper plate partially removed to show the workingparts. Fig. 2 is a side elevation of the same. Fig. 3 is a frontelevation of a modified form. Fig. at is a sectional view of anadjustable form of keeper. Fig. 5 is an end view of latch-case.

In the figures, A is the inclosing case of the latch.

B is the latch, which projects from the case at B and is shaped as shownin Fig. 2. The latch B works vertically within the case and is retainedby suitable lugs b within the case. A strong spring 0 exerts continuouspressure upon the latch-bolt. D is the keeper, attached to the door-postand provided with the curve on the interior of the slot D. The curvedouter surface of the bolt B engages the curved surface of the keeper,and by the continuous pressure of the spring 0 the parts are forcedtogether and retained in contact even when the door is not tightly shut,the advantage of this construction being that no rebound of the door ispossible when forcibly slammed. The pressure of the spring retains thebearing-surfaces so close together that no movement will be possible.

Various methods may be employed to operate the latchas shown in Fig. 1,a lever E, pivoted at e and extending in the form of a handle at Ebeyond the case. Apin E entering the slot B in the bolt, operates it upor down. A locking device worked by a key is shown, G being the boltadapted to pass over the lug O on the latch. A tumbler H is raised bythe key to release the bolt G, anda spring I returns it.

In Fig. 3 is shown a method for operating the latch-bolt by a knob,(shown in dotted lines,) the spindle J being in section. In this figurea lug K, integral with the spindle J, engages the latch and movesit inone direction, a lug upon the spindle J and boss M upon the latch-boltpreventing turning in the other direction.

In Fig. 4 is shown an adjustable form of keeper, in which D. is thekeeper, provided with the plate 0 integral therewith, which is retainedwithin the back plate 0 of the keeper. The lower portion below thekeeper D has a double curved extremity R, adapted to rock upon the woodbacking of the post 0 while the upper extremity is reduced in thicknessand is movable behind the plate of thekeeper by means of the set-screwP, which bears both upon the post 0 and plate 0. An opening smaller thanthe head of the screw permits of its being turned with a screw-driver.I11 operation by means of this adjustment the relative position'of thesurface D to the surface B of the latch may be easily adjusted toperfectly close the door when the latch is down, 0 which has heretoforebeen done more laboriously by scraps of pasteboard inserted, &c.

In Fig. 5 is seena modification of the original patent before mentionedin the preamble to William R. Monroe, showing a beveled or diagonal slotin the case, the object and function of which is the same as the doublebevel upon the latch-bolt, as shown in that patent,

and avoids the work on the latch. In this figure, A is the latch-case; Bthe extremity of the latch; E the slot havinginclined walls.

What I claim, therefore, as new, and desire to secure by Letters Patent,is

1. The combination of a base plate with a detachable keeper providedwith an integral base extending upwardly and downwardly behindthebase-plate, the lower portion of which is doubly curved, asdescribed, and the upper portion is reduced and provided with anadjusting-screw, as and for the purpose set forth.

2. In an automatic latch, av bolt having a vertically-moving portioninclosed in a suitable case and having a horizontal latching endprojecting from the case, the said end be- CHARLES WV. MONROE.

\Vitnesses:

WM. M. MONROE, E. C. GREEN.

